CVE-2026-31221
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
PyTorch-Lightning versions 2.6.0 and earlier contain an insecure deserialization vulnerability (CWE-502) in the checkpoint loading mechanism. The LightningModule.load_from_checkpoint() method, which is commonly used to load saved model states, internally calls torch.load() without setting the security-restrictive weights_only=True parameter. This default behavior allows the deserialization of arbitrary Python objects via the Pickle module. A remote attacker can exploit this by providing a maliciously crafted checkpoint file, leading to arbitrary code execution on the victim's system when the file is loaded.
| Vendor | n/a |
| Product | n/a |
| Published | May 12, 2026 |
| Last Updated | May 12, 2026 |
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Affected Versions
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